#The sum of the squares of the first ten natural numbers is,
#1^2 + 2^(2) + ... + 10^(2) = 385
#
#The square of the sum of the first ten natural numbers is,
#(1 + 2 + ... + 10)^(2) = 55^(2) = 3025
#
#Hence the difference between the sum of the squares of the first ten natural numbers and the square of the sum is 3025 − 385 = 2640.
#
#Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum.
#
#R: 25164150

print (sum(range(101))**2 - sum([x**2 for x in range(101)]))

print "ã"
